Developing device, process cartridge and image forming apparatus
First Claim
1. A developing device comprising:
- a developing chamber in which a developing agent carrier is disposed, the developing chamber having one end and another end opposite to the one end in a longitudinal direction of the developing agent carrier;
a developing agent storage chamber disposed above the developing chamber in a gravity direction, the developing agent storage chamber having one end and another end opposite to the one end of the developing agent storage chamber in the longitudinal direction;
a partition wall partitioning the developing chamber and the developing agent storage chamber;
a first conveying unit that is provided within the developing agent storage chamber and that is configured to convey a developing agent from the one end of the developing agent storage chamber to the other end of the developing agent storage chamber and to supply the developing agent from the developing agent storage chamber to the developing chamber;
a second conveying unit that is provided within the developing chamber and that is configured to convey the developing agent from the other end of the developing chamber to the one end of the developing chamber and to supply the developing agent toward the developing agent carrier; and
a third conveying unit that is provided between the one end of the developing agent storage chamber and the one end of the developing chamber and that is configured to convey the developing agent from the one end of the developing chamber to the one end of the developing agent storage chamber, whereinthe third conveying unit is disposed to be directly opposed to one end of the second conveying unit in a developing agent conveying direction of the second conveying unit, andthe developing agent conveying direction of the second conveying unit is perpendicular to a developing agent conveying direction of the third conveying unit.
1 Assignment
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Accused Products
Abstract
A developing device includes a first conveying unit provided within a developing agent storage chamber and configured to convey developing agent from one end of the storage chamber to another end in a longitudinal direction of a developing agent carrier disposed within a developing chamber and to supply the developing agent from the storage chamber to the developing chamber. The device may include a second conveying unit provided within the developing chamber and configured to convey the developing agent from the other end of the developing chamber to the one end in the longitudinal direction and to supply the developing agent toward a developing agent carrier, and a third conveying unit provided between the one end of the storage chamber and the one end of the developing chamber and configured to convey the developing agent from the one end of the developing chamber to the one end of the storage chamber.
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Citations
10 Claims
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1. A developing device comprising:
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a developing chamber in which a developing agent carrier is disposed, the developing chamber having one end and another end opposite to the one end in a longitudinal direction of the developing agent carrier; a developing agent storage chamber disposed above the developing chamber in a gravity direction, the developing agent storage chamber having one end and another end opposite to the one end of the developing agent storage chamber in the longitudinal direction; a partition wall partitioning the developing chamber and the developing agent storage chamber; a first conveying unit that is provided within the developing agent storage chamber and that is configured to convey a developing agent from the one end of the developing agent storage chamber to the other end of the developing agent storage chamber and to supply the developing agent from the developing agent storage chamber to the developing chamber; a second conveying unit that is provided within the developing chamber and that is configured to convey the developing agent from the other end of the developing chamber to the one end of the developing chamber and to supply the developing agent toward the developing agent carrier; and a third conveying unit that is provided between the one end of the developing agent storage chamber and the one end of the developing chamber and that is configured to convey the developing agent from the one end of the developing chamber to the one end of the developing agent storage chamber, wherein the third conveying unit is disposed to be directly opposed to one end of the second conveying unit in a developing agent conveying direction of the second conveying unit, and the developing agent conveying direction of the second conveying unit is perpendicular to a developing agent conveying direction of the third conveying unit. - View Dependent Claims (2, 3, 4, 5, 6, 9, 10)
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7. A process cartridge comprising:
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a developing device including; a developing chamber in which a developing agent carrier is disposed, the developing chamber having one end and another end opposite to the one end in a longitudinal direction of the developing agent carrier; a developing agent storage chamber disposed above the developing chamber in a gravity direction, the developing agent storage chamber having one end and another end opposite to the one end of the developing agent storage chamber in the longitudinal direction; a partition wall partitioning the developing chamber and the developing agent storage chamber; a first conveying unit that is provided within the developing agent storage chamber and that is configured to convey a developing agent from the one end of the developing agent storage chamber to the other end of the developing agent storage chamber and to supply the developing agent from the developing agent storage chamber to the developing chamber; a second conveying unit that is provided within the developing chamber and that is configured to convey the developing agent from the other end of the developing chamber to the one end of the developing chamber and to supply the developing agent toward the developing agent carrier; and a third conveying unit that is provided between the one end of the developing agent storage chamber and the one end of the developing chamber and that is configured to convey the developing agent from the one end of the developing chamber to the one end of the developing agent storage chamber, wherein the third conveying unit is disposed to be directly opposed to one end of the second conveying unit in a developing agent conveying direction of the second conveying unit, and the developing agent conveying direction of the second conveying unit is perpendicular to a developing agent conveying direction of the third conveying unit; and a photosensitive element on which a developing agent image is formed by the developing agent supplied from the developing agent carrier.
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8. A tandem-type image forming apparatus comprising:
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plural developing devices, each including a developing chamber in which a developing agent carrier is disposed, the developing chamber having one end and another end opposite to the one end in a longitudinal direction of the developing agent carrier; a developing agent storage chamber disposed above the developing chamber in a gravity direction, the developing agent storage chamber having one end and another end opposite to the one end of the developing agent storage chamber in the longitudinal direction; a partition wall partitioning the developing chamber and the developing agent storage chamber; a first conveying unit that is provided within the developing agent storage chamber and that is configured to convey a developing agent from the one end of the developing agent storage chamber to the other end of the developing agent storage chamber and to supply the developing agent from the developing agent storage chamber to the developing chamber; a second conveying unit that is provided within the developing chamber and that is configured to convey the developing agent from the other end of the developing chamber to the one end of the developing chamber and to supply the developing agent toward the developing agent carrier; and a third conveying unit that is provided between the one end of the developing agent storage chamber and the one end of the developing chamber and that is configured to convey the developing agent from the one end of the developing chamber to the one end of the developing agent storage chamber, wherein the third conveying unit is disposed to be directly opposed to one end of the second conveying unit in a developing agent conveying direction of the second conveying unit, and the developing agent conveying direction of the second conveying unit is perpendicular to a developing agent conveying direction of the third conveying unit, and wherein the plural developing devices are aligned in a conveying direction of a recording sheet on which an image is to be formed.
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Specification